With a long history, its shape is similar to the ancient shank drum. It is a small double-sided slender-waisted rattle without a wooden handle, but it is different from the rattle spread in the mainland. The drum body is composed of two bowl-shaped cavities that are butted at the bottom and communicated in the middle waist.
In the old days, the skulls of two more people in the Tibetan area were made, and a hole was drilled in the center of the bottom, and glued to the wooden annular joint.
Some monasteries are also made of ivory, and the whole piece of ivory is selected to carve into shape. The Danbulenger in Tibetan Buddhist monasteries in Mongolian areas is mostly made of purple wood or mahogany. Drums vary in size and specifications. For the larger ones, the diameter of the drum surface is 20 cm to 30 cm, the thickness of the drum (two bowl-shaped drum shells) is 10 cm to 12 cm, and most of them are made of wood. The smaller ones, the diameter of the drum surface is 7 cm to 10 cm, the thickness of the drum is 7 cm to 8 cm, and most of them are made of human skull or ivory.
The drum surfaces at both ends of the small damaru are covered with dark green sheepskin (soak the film in patina and acid solution for coloring);

Dadamara is covered with calf or pig skins. The drum body is mostly painted with brown, red or green paint. The drum waist (wooden joint) is tied with a leather rope or silk rope on the left and right sides. Colored ribbons or silk spikes are tied in the middle as decoration, and the ribbons are also decorated with small white shells, and some ribbons are as long as 50 cm.

In Tibetan areas, although both belong to Tibetan Buddhism, the dharmas used are different due to different sects. The ivory damaru of the Jokhang Temple (Gelug School) in Lhasa has an oval drum surface, 9.5 cm long, 8.3 cm wide, 5.6 cm thick, 4.5 cm long and 4.5 cm long, and the drum surface is dark green.